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Illinois City CDP, IL

ZIP Code 61259 — Illinois City CDP, IL Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Middle ClassLow Snow Area

Map, Quick Facts & Location

Quick Facts

Local time
Population
1,107
Median Income
$88,550
+18% vs US avg
Home Value
$198,900
-43% vs US avg
Median Rent
N/A
Median Age
55.5 yrs
+43% vs US avg
Area Code
Congress
Top Ancestry
GermanIrishAmerican
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Location
Coordinates
41.3926, -90.9544
Elevation
550 ft
Land Area
76.4 sq mi
Water Area
8.0 sq mi (10% water)

At a glance

Population
1,107
Density
N/A
Median income
$88,550
+18% vs US avg
Home value
$198,900
-43% vs US avg
Median rent
N/A
Timezone

Overview of ZIP Code 61259

RetirementRetirement-oriented community
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Sunrise, sunset & moon

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What to know about ZIP 61259

ZIP code 61259 covers Illinois City, IL in Rock Island County with a population of about 1,107.

At a glance, the area shows median age of 55.5 versus a U.S. median of about 38.9.

It sits in telephone area codes 309, 861; U.S. House district IL-17; the DAVENPORT - R. ISLAND - MOLINE media market.

Local search focus: Retirement

Illinois City, IL fits a retirement-oriented profile (older median age or known retirement-community context). Residents and relocators commonly research healthcare access, everyday amenities (dining, personal services), and housing costs rather than tech or campus life.

Income and economy in Illinois City, IL

Median household income in ZIP 61259 is about $88,550 — about 18% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 4.1%; unemployment rate near 4.2%; 17.5% of adults with a bachelor’s degree or higher (about 16.2 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Manufacturing, Retail trade, and Education; about 1.9% of workers reporting work-from-home (about 13.3 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing and affordability in ZIP 61259

Median home value is about $198,900 — about 43% below the U.S. median home value ($348,079).

Housing tenure and rents show owner-occupancy near 96.4% (about 31.0 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 61259 in Illinois City, IL, a household would need roughly $55,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,278. That sits below the local median household income ($88,550), suggesting the typical household income is closer to a workable buy-in level under these assumptions. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

Climate risk and migration signals

FEMA’s National Risk Index rates natural-hazard risk for Illinois City CDP, IL as Relatively Moderate (composite score 84.1), which is elevated versus much of the country. The strongest component scores on US5 are flood (79.5) and hurricane (13.8). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Illinois City CDP, IL show little to no average snow and around 36.4 inches of annual precipitation.

IRS migration statistics show a net inflow of about 62 for ZIP 61259 (Illinois City CDP, IL) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.

Nearby (from this ZIP)

Airport MLI (23.5 miles (37.8 km)) · Trinity College of Nursing & Health Sciences (21.0 miles (33.7 km)) · Herbert Hoover National Historic Site (28.0 miles (45.1 km)) · VA: Community Resource and Referral Center - Quad Cities (21.8 miles (35.0 km))

Full lists and map pins are in the Infrastructure section below.